Signals & Emissions

5 free sample questions of the 47 in this topic. The full set is in the app.

1. Question 1

   Which of the following is a form of amplitude modulation?

   • A.Spread spectrum
   • B.Packet radio
   • C.Single sideband
   • D.Phase shift keying (PSK)
   Show answer & explanation

   Answer: C. Single sideband

   Single sideband. (NCVEC T8A)

   Source: 2026-2030 Technician Class FCC Element 2 Question Pool and Syllabus — Subelement T8, Group T8A, Question T8A01

2. Question 2

   What type of modulation is commonly used for VHF packet radio transmissions?

   • A.FM or PM
   • B.SSB
   • C.AM
   • D.PSK
   Show answer & explanation

   Answer: A. FM or PM

   FM or PM. (NCVEC T8A)

   Source: 2026-2030 Technician Class FCC Element 2 Question Pool and Syllabus — Subelement T8, Group T8A, Question T8A02

3. Question 3

   Which type of voice mode is often used for long-distance (weak signal) contacts on the VHF and UHF bands?

   • A.FM
   • B.DRM
   • C.SSB
   • D.PM
   Show answer & explanation

   Answer: C. SSB

   SSB. (NCVEC T8A)

   Source: 2026-2030 Technician Class FCC Element 2 Question Pool and Syllabus — Subelement T8, Group T8A, Question T8A03

4. Question 4

   Which type of modulation is commonly used for VHF and UHF voice repeaters?

   • A.AM
   • B.SSB
   • C.PSK
   • D.FM or PM
   Show answer & explanation

   Answer: D. FM or PM

   FM or PM. (NCVEC T8A)

   Source: 2026-2030 Technician Class FCC Element 2 Question Pool and Syllabus — Subelement T8, Group T8A, Question T8A04

5. Question 5

   Which of the following signal types has the narrowest bandwidth?

   • A.FM voice
   • B.SSB voice
   • C.CW
   • D.Slow-scan TV
   Show answer & explanation

   Answer: C. CW

   CW. (NCVEC T8A)

   Source: 2026-2030 Technician Class FCC Element 2 Question Pool and Syllabus — Subelement T8, Group T8A, Question T8A05

42 more Signals & Emissions questions are in the app, along with explanations and flashcards for every one.

OnAir is an independent study aid based on the NCVEC 2026-2030 Technician Class question pool and 47 CFR Part 97. It is not affiliated with, endorsed by, or sponsored by the FCC, NCVEC, ARRL, or any government agency.